“Spina bifida is a type of birth defect affecting the development of the baby’s spine. It occurs when a developing baby’s spine does not develop or close properly, leaving a section of the spinal cord and nerves exposed.
In the first month of pregnancy, a special set of cells form the neural tube. The top of the neural tube forms the baby’s brain and skull, while the rest of the neural tube becomes the baby’s spinal cord and other structures surrounding the spinal cord. Normally, the neural tube completely closes 28 days after conception. In people with spina bifida, though, parts of the neural tube stay open. An open neural tube leaves the brain or spinal cord exposed and at risk for damage, potentially causing physical and intellectual disabilities.”
Radiology Affiliates Imaging-RAI (https://4rai.com/2022/09/15/october-is-spina-bifida-awareness-month/)